COMPUTING

NASA partnership sends data to Africa

A partnership between US space agency NASA and agencies in Africa and Europe has sent more than 30 terabytes of free Earth science satellite data to South African researchers to support sustainable development and environmental applications in Africa.

The data from one of the instruments on NASA's Terra satellite provide observations of Africa's surface and atmosphere, including vegetation structure, airborne pollution particles, cloud heights and winds.

Transfer of these data to a distribution center in Africa will make it broadly accessible to African users who have not been able to remotely download the large data files because of limitations in the continent's Internet infrastructure.

The data are from the Multi-angle Imaging SpectroRadiometer (MISR) on Terra. NASA’s Jet Propulsion Laboratory in Pasadena, California, built and manages the instrument, and NASA's Langley Research Center in Hampton, processes, archives, and distributes the data.

MISR has been making continuous measurements of Earth’s surface and atmosphere for more than a decade. MISR observes the sunlit portion of Earth continuously, viewing the entire globe between 82 degrees north and 82 degrees south latitude every nine days. Instead of viewing Earth from a single perspective, the instrument collects images from nine widely spaced view angles.

"NASA is committed to helping governments, organizations and researchers around the world make effective use of Earth observation data to aid in environmental decision making," said Hal Maring, a program manager in the Earth Science Division of the Science Mission Directorate at NASA Headquarters in Washington. "These efforts support the goals of the Group on Earth Observations, a partnership of international agencies that promotes collaborative use of Earth science data."

South Africa’s Council for Scientific and Industrial Research (CSIR) in Pretoria will distribute the data at no charge to the research community in the region.

"The data transfer can be seen as a present from NASA to the newly-formed South African National Space Agency," said Bob Scholes, CSIR research group leader for ecosystem processes and dynamics. "It will kick-start a new generation of high-quality land surface products, with applications in climate change and avoiding desertification." Desertification is the gradual transformation of habitable land into desert due to climate change or destructive land use practices.

NASA noted that while Internet connectivity in Africa has improved greatly in recent years, access and bandwidth remain too limited to support downloading vast data files. This led CSIR to host the data directly.

NASA shipped most of the data on high-density tapes. The agencies will ensure the database stays updated with current MISR observations by upgrading connectivity and facilitating sharing of data among participating academic and research institutions.